The Apple Store again discounts several previous-generation, factory-refurbished MacBook Air notebooks, as listed below. Plus, each system qualifies for free shipping. At up to $400 off, that ties our mention from two weeks ago and puts most models are at the lowest total price we've seen. Sales tax is added where applicable. Each MacBook Air carries a 1-year Apple warranty, the same as new units. Items are removed from The Apple Store when sold out. Some best bets:

• Refurb MacBook Air MC506LL/A Core 2 Duo 1.4GHz 11.6" 128GB SSD (pictured) for $799
• refurb MacBook Air FC968LL/A Core 2 Duo 1.5GHz 11.6" 64GB SSD for $849
• refurb MacBook Air FC969LL/A Core 2 Duo 1.6GHz 11.6" 128GB SSD for $999
• browse for more discounted refurbished Macbook Air notebooks at The Apple Store